<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
我是主界面
<br>
欢迎
<span id="showName"></span>登录


</body>

<script src="js/jquery-3.2.1.js"></script>
<script>
    $(function () {
        var jobSeeker = sessionStorage.getItem("jobSeeker");
        console.log(jobSeeker)
        var obj = JSON.parse(jobSeeker);
        $('#showName').text(obj.jsname);
    })

</script>
</html>